Characterization of elastic and time-dependent deformations in high performance lightweight concrete by image analysis

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dc.contributor.authorLopez, Mauricio
dc.contributor.authorKahn, Lawrence F.
dc.contributor.authorKurtis, Kimberly E.
dc.date.accessioned2024-01-10T13:11:39Z
dc.date.available2024-01-10T13:11:39Z
dc.date.issued2009
dc.description.abstractImage analysis and strain mapping were used to examine the nature of elastic, creep and shrinkage strains in high performance lightweight concrete (HPLC). The strain maps showed non-uniform deformations related to microstructural features. Both average strain and non-uniformity increased with time under testing. Paste-rich regions exhibited higher creep plus shrinkage than the lightweight aggregate (LWA) particles examined herein; it is suggested that LWA could have a role in reducing deformations of the paste. Compared to normal weight high performance concrete (HPC), the paste and LWA in the HPLC exhibited more gradual spatial differences in elastic deformations, creep and shrinkage. It is proposed that this difference results from the lower stiffness of the LWA compared to granite used in the HPC. The results indicate that improvement in elastic property matching between the lightweight aggregate and high performance paste reduces stress concentrations at the aggregate/paste interface and contributes to reductions in deformations of HPLC compared to HPC. (C) 2009 Elsevier Ltd. All rights reserved.
dc.fechaingreso.objetodigital21-03-2024
dc.format.extent10 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.cemconres.2009.03.015
dc.identifier.eissn1873-3948
dc.identifier.issn0008-8846
dc.identifier.urihttps://doi.org/10.1016/j.cemconres.2009.03.015
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78077
dc.identifier.wosidWOS:000267585800007
dc.information.autorucIngeniería;López M;S/I;7202
dc.issue.numero7
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final619
dc.pagina.inicio610
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.revistaCEMENT AND CONCRETE RESEARCH
dc.rightsacceso restringido
dc.subjectAggregate
dc.subjectCement paste
dc.subjectCreep
dc.subjectInterfacial transition zone
dc.subjectShrinkage
dc.subjectCEMENT PASTE
dc.subjectAUTOGENOUS SHRINKAGE
dc.subjectAGGREGATE
dc.subjectMICROSTRUCTURE
dc.subjectSTRENGTH
dc.subjectCREEP
dc.subjectWATER
dc.subject.ods12 Responsible Consumption and Production
dc.subject.odspa12 Producción y consumo responsable
dc.titleCharacterization of elastic and time-dependent deformations in high performance lightweight concrete by image analysis
dc.typeartículo
dc.volumen39
sipa.codpersvinculados7202
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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